fan troubles

I have a 2003 suburban and when I turn on my heat or a/c with the auto button or manually it takes about 5-10 min before it starts blowing out. Has anyone else had this problem and if so what is the root of it? Thanks in advance

i have not heard of that issue. Does your fan blow at all speeds when it finally does work? There are 3 possible causes of the issue, the control unit, the resistor pack for the fan, or the fan motor itself. you can test the control unit by turning it on and then checking at the resistor for a signal coming in. if the signal is going to the resistor then check for voltage coming out of the resistor. if you have no voltage going to the fan from the resistor, and then after 10 minutes all of a sudden you do, then I would think that the resistor is bad.

he said that it does the same thing on manual though. another thing he might try is hitting the motor with his hand when he first turns it on. I have seen them go bad and only start to work after hitting a bump.

he said that it does the same thing on manual though. another thing he might try is hitting the motor with his hand when he first turns it on. I have seen them go bad and only start to work after hitting a bump.

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I agree, a motor not spinning up because of a poor connection, or a bad bearing.